Study of magnetic and magnetoelectric measurements in bismuth iron titanate ceramic—Bi8Fe4Ti3O24
Study of magnetic and magnetoelectric measurements in bismuth iron titanate ceramic—Bi8Fe4Ti3O24
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DOI：
10.1016/j.materresbull.2003.09.028
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发表时间：
2004-01
影响因子：
5.4
通讯作者：
A. Srinivas;Dong‐Wan Kim;K. Hong;S. Suryanarayana
中科院分区：
文献类型：
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作者：
A. Srinivas;Dong‐Wan Kim;K. Hong;S. Suryanarayana
钛酸铋铁-Bi8Fe4Ti3O24属于Aurivillius族化合物，它是用固相方法合成的，在776°C附近发生铁电转变，磁化强度在14K到300K之间发生斜率变化。在室温和14K下观察到的磁滞回线显示出窄的回线，表明了反铁磁行为。动态磁电(ME)测量是在室温下进行的，77K时显示的是一个非线性输出信号。在77~300K温度范围内对ME输出进行温度扫描，在200K出现异常，这可以与磁化数据中观察到的斜率变化相印证。
Bismuth iron titanate—Bi8Fe4Ti3O24, belongs to the Aurivillius family of compounds, was synthesized by solid-state route and showed a ferroelectric transition around 776°C. Magnetization measurements carried out from 14 to 300K showed a slope change around 220K. Hysteresis loops observed at room temperature and at 14K showed narrow loops, indicating antiferromagnetic behavior. Dynamic magnetoelectric (ME) measurements were carried out at room temperature and at 77K indicated a non-linear output signal. A temperature scan of ME output was performed from 77 to 300K showed an anomaly at 200K, which can be corroborated to the slope change observed in the magnetization data.